Seems like there is either a bug importing an 8b texture, or if 8b texture import is not supported, then a more user friendly message would help.
Currently if 8b/greyscale is imported, then in case of:
- TGA - error message saying “Failed to import…” is displayed, no reason given. If technically possible it would be better if it also says that 8b texture can’t be imported.
- PNG 1024x1024 and above - seems like random texture that’s already between assets is used (and it still points to the imported 8b png asset). Interestingly, 512x512 seems to be imported alright.
These problems could be related to this problem → https://rocket.unrealengine.com/questions/6129/bugrequest-importing-greyscale-psd.html where you explain that only RGB textures are supported for import. With PNG it’s just more confusing when instead of any error, some random texture is “imported”. But then, 512x512 seems to import OK.